I was reading a conversation in forced induction, and they were talking about how high boost causes "ring land" failure, what is that? My only guess is that the the walls on either side of the groove the rings sits in breaks...

thnx

 

Correct, usually the top breaks exposing the piston ring.

 

Not the land where the piston rings all reside in harmony?

 

I think I've been there, while using carb cleaner to find a vacuum leak!!